The Thermolite® Reactor Extreme increases sleeping bag performance by up to 15°C with its super insulating 110g/m² Thermolite® fabric. Spacious design allows for a comfortable night’s sleep, even when the mercury plummets. Thermolite®
is a fibre with a hollow core that provides extraordinary warmth for
its weight while remaining extremely breathable. The Thermolite®
Reactor Extreme adds warmth to a sleeping bag or, used alone, is ideal
as a warm weather bag. With the stretchy knit fabric that moves with you
and a draw cord hood, this liner is perfect for wrigglers and rollers
or anyone who needs some extra warmth.